By Wendell Barnhouse
Big12Sports.com Correspondent

TULSA, Okla. – Three games, three (by seed) upsets.

Following No. 5 seed Texas and No. 8 seed Baylor, sixth-seeded Kansas State kept the upset train rolling in Game Three of the Phillips 66 Big 12 Baseball Championship. The Wildcats knocked off No. 3 seed Oklahoma, 7-3, Wednesday at ONEOK Field.

K-State's victory started in nondescript but telling fashion. Carter Yagi opened the game with a single and motored to third when Tyler Wolfe followed with a hit-and-run single. That aggression paid off as Yagi scored when Shane Conlon grounded into a double play.

"It was a huge momentum swing to get a run on the board, it was huge to get that early run," Wildcats center fielder Max Brown said.

"We just came out ready to play, came out on fire from the start," K-State coach Brad Hill said. "We got aggressive with the hit and run in the first inning. We did a great job of getting the momentum.

"I just like the way we came out played, we were relaxed and confident."

The momentum and confidence continued as the Wildcats scored twice in the second and third innings to take a 5-0 lead.

"Getting the early lead like that made it so much easier for me," said K-State starter Colton Kalmus. "I was able to fill up the zone because the team was behind me."

While K-State was swaggy, Oklahoma was draggy. The Sooners committed three errors and that led to four unearned runs.

"K-State came out and set the tempo," Oklahoma coach Pete Hughes said. "And we didn't play clean baseball."

"K-State came out and set the tempo," Oklahoma coach Pete Hughes said. "And we didn't play clean baseball."

Oklahoma had runners in scoring position in four of the first five innings and left eight runners on base.

"We couldn't get any hits strung together," said Taylor Alspaugh, who provided OU's first run with a leadoff homer in the sixth inning.

One out after Alspaugh's dinger, Anthony Hermelyn sent a big fly over the wall in left to make it 5-2 and chase Kalmus.

The Wildcats bounced back with two runs in the top of the seventh. Center fielder Max Brown's fourth hit in four at bats was a bloop single to center with two outs and the bases loaded that restored K-State's edge to five runs.

"We needed a shutdown inning right there," Hughes said.

"The two home runs got momentum on their side," said Brown, went 4-for-4. "Two more runs was big for us. It was a bloop hit but it looks like a line drive in the box score."

The Sooners pulled to within 7-3 in the bottom of the seventh but with two runners on base and one out, Kolbey Carpenter hit a rope caught by right fielder Clayton Dalrymple.

"Carpenter was up there with two runners on, was ahead of the count, put the barrel of the bat on the ball and ripped it right at the kid (K-State's right fielder)," Hughes said. "A lot of it's luck, a lot of it is your opponent making pitches."

Kansas State will next face No. 2 seed Oklahoma State. That contest will be at 7:30 p.m. Thursday. The Sooners will face West Virginia in a losers' bracket game that will start at 12:30 p.m. Thursday.